The terms of a trust shall always control and take precedence over any section of this trust code to the contrary. If a term of the trust modifies or makes any section of this trust code inapplicable to the trust, the common law shall apply to any issues raised by such term.
Iowa Code § 633A.1105
99 Acts, ch 125, §5, 109 2003 Acts, ch 95, §7; 2004 Acts, ch 1015, §26; 2005 Acts, ch 38, §54